Hi @Ashru ,
ERR_SSL_PROTOCOL_ERROR
The error message is a little general to do diagnostics.
Here are two SSRS https configuration blogs which will be help to you to see if you miss some configuration.
https://www.enhansoft.com/how-to-setup-ssrs-to-use-https-part-1/
https://www.enhansoft.com/how-to-setup-ssrs-to-use-https-part-2/
As you mentioned ,the
https://+443/ReportServer
https://+443/Reports
The https url seems is not the correct url,please make a double check.
After you reconfigure the https for urls, if the error still occurs,here is a troubleshooting document for your cautiously reference.
Regards,
Zoe
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